According to raw-identify from LibRaw 0.16:
ISO speed: 320
Shutter: 24.7 sec
Aperture: f/6.4
Focal length: 28.0 mm

According to Exiftool 9.61:
== Exif section
F Number : 6.3
ISO : 320
Shutter Speed Value : 24.7
Aperture Value : 6.4
Focal Length : 28.0 mm
== Makernotes sections
Target Aperture : 6.3
Target Exposure Time : 25.4
Base ISO : 308

The values of Aperture: 22 and Focal Length: 24 are from lens limits section:
Max Focal Length : 105 mm
Min Focal Length : 24 mm
Min Aperture : 23 (real, not averaged)

From my point, LibRaw values are nearly correct (there are two Exposure time values, LibRaw shows Exif section, not Makernotes